SKU: 61795257800

NOW Supplements L-Tryptophan 500 mg. Supplement, Positive Mood and Relaxation (120 ct.)

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Description

NOW Supplements L-Tryptophan 500 mg. Supplement, Positive Mood and Relaxation (120 ct.)HIGHLIGHTS: L Tryptophan is an essential amino acid that is not synthesized by the body and must be obtained by diet or supplementation Critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function* Every lot is tested to be free of Peak E and microbial contamination NPA A rated GMP certification means that every aspect of the NOW manufacturing process has been

HIGHLIGHTS:





  • L-Tryptophan is an essential amino acid that is not synthesized by the body and must be obtained by diet or supplementation


  • Critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function*


  • Every lot is tested to be free of Peak E and microbial contamination


  • NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).




PRODUCT DETAILS:



What is L-Tryptophan?



L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. L-Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and proper immune system function.* Every lot of NOW L-Tryptophan is tested to be free of Peak E and microbial contamination. 



Manufacturing Testing and Assurance



Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens. Made and quality tested in the USA in NOW’s Natural Products Association (NPA) A-rated, GMP-certified manufacturing facility. NOW conducts approximately 19,000 quality control tests per month in their in-house labs to ensure their products are safe and effective. In taking more positive steps on their journey to reduce the company's environmental impact, NOW is starting the transition of their supplement bottles to 100% post-consumer recycled (PCR) resin in 2023. Replacing the NOW standard PET bottles with PCR resin allows the company to re-use recycled packaging materials and lighten NOW's footprint on the earth.



NOW Nutrition



From day one, NOW was created to empower healthy living. We are a legacy, family-owned brand, a founding supporter of Vitamin Angels, and absolutely relentless about making the natural products and supplement industry better. Our mission is to provide value in products and services that empower people to lead healthier lives.



Suggested Usage



Take 1-2 capsules 2 to 3 times daily on an empty stomach, with final dose at bedtime, or as directed by your physician. Store in a cool, dry place after opening. 



GRP:SMS

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SKU: 61795257800

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4.6 ★★★★★
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Taneisha Cookhorn
Waukegan, US
★★★★★ 5
Perfect size and fit
Size: 11 Women/10 Men, Color: Black/Black/Black
This sandal is the perfect fit and very comfy. It’s very sturdy and outdoor friendly as well. I love how flexible and breathable this is and the design makes it even more perfect.
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Reviewed in the United States on May 29, 2026
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liz vega
Birmingham, US
★★★★★ 4
Great...
Size: 8 Women/7 Men, Color: Black/Black/Black
I bought these flip-flops, and they exceeded my expectations. The highlights for me are: Total Comfort: They are extremely comfortable right from day one. Great Quality: You can tell the materials are sturdy and durable—typical of the brand. Excellent Price: Unbeatable value for money. I really liked them; it’s undoubtedly a purchase you won't regret. They are totally worth it!
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Reviewed in the United States on May 26, 2026
R
Verified Purchase
Rosie
Carnegie, US
★★★★★ 5
VERY SMALL but otherwise perfect
Size: 9 Women/8 Men, Color: Black/White/Black
okay so one of my feet is slightly larger than the other, only like a quarter maybe half size, making shoe shopping difficult sometimes.. not often bc with sneakers and other closed toe shoes, it’s not usually a problem, it’s really only slides. anyway i’m a women’s 8.5 sometimes 9. if they only have whole sizes, 95% of the time I go with 9 and rarely an 8. i’ve never in my life bought shoes larger than a 9. it’s worth noting I recently bought two new adidas superstar sneakers in a 9 and I wear them when I want comfort bc they fit so well. that was maybe 6 months ago and I’m grown so they are not changing. I order the 9 (men’s 8/womens 9) and my left foot looks fine but the bigger foot is giving me pause. the shoes themselves were the exact length as my actual foot, leaving no room at the toe or heel, and my feet fit perfectly in the indentations of a foot.. but they just didn’t feel right. I walked around my carpet for a little bit and caught my toes hanging past the actual shoe and basically in mid air. At that moment I knew I needed to size up to a 10 which is crazy to me. The 10 got here today and fits much better, even though now it’s a little big on my smaller foot, but not enough to cause a problem. I’m just shocked i’m wearing a size 10 bc im 40 years old.. lol i’ve been buying shoes for quite some time and never once in my life did I need to size up to a 10. Surprisingly the 10s aren’t noticeably bigger all around, like in the actual strap that holds your feet. I love these slides, always have, I just don’t ever remember having to buy a 10. Personally, I think it’s because of the unisex sizing- men’s and women’s shoes are more than one size different. It’s closer to a size and a half. my parents had a shoe store for like 15 years so I promise you I know what I’m talking about. anyway I would absolutely recommend sizing up one whole size unless you know for a fact what size you wear in these specific shoes.
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Reviewed in the United States on October 4, 2024
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Joan Snow
Cuba, US
★★★★★ 5
Reliable comfortable stylish
Great product for the money.... Very solid!! Needs some breaking in but will definitely be more comfy after some weeks of consistent wear. Arch support is hard at first but once broken is feel nice. Great design and nice color way. Easy to keep clean. Would highly recommend. Great for house gym or light pool use.
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Reviewed in the United States on May 3, 2026
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Mimi
Waukegan, US
★★★★★ 5
Cat Girl Slide!
Size: 6 Women/5 Men, Color: Off White/Black/Magic Beige
Perfect for my leopard accessory! Also vey comfy! The colors are perfect they go with anything and these are soft and breathable a little different from the basic slides..
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Reviewed in the United States on June 12, 2026

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